Q35214: Proc Directive with Uses Option and Nine Registers

Article: Q35214
Product(s): See article
Version(s): 5.10   | 5.10
Operating System(s): MS-DOS | OS/2
Keyword(s): ENDUSER | SR# G880831-2870 buglist5.10 | mspl13_masm
Last Modified: 13-JAN-1989

The assembler fragment (for MASM Version 5.10) below displays two
problems when assembled.

The problem seems to be the use of more than eight registers in a
"proc uses" clause.

A workaround for this problem is to specify only eight registers in
the uses option and include in your procedure the pushes and pops for
any other registers to be saved.

Microsoft has confirmed this to be a problem in Version 5.10. We are
researching this problem and will post new information as it becomes
available.

The following assembler fragment demonstrates this problem:

foo proc uses ax bx cx dx ds cs ss bp
foo endp
end

When assembled as is, MASM returns an out of memory error:

Microsoft (R) Macro Assembler Version 5.10
Copyright (C) Microsoft Corp 1981, 1988.  All rights reserved.

masm.err(12): Out of memory

When assembled as a part of the complete module, it returns the error:

Microsoft (R) Macro Assembler Version 5.10
Copyright (C) Microsoft Corp 1981, 1988.  All rights reserved.

rd.ASM(84): warning A4016: Reserved word used as symbol: BP
rd.ASM(89): error A2009: Symbol not defined: BP(ASCII 016)

  47898 Bytes symbol space free

      1 Warning Errors
      1 Severe  Errors

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